Oldsmobile 2004 Silhouette Owner's Manual page 386

Notice: If you use a jack to raise the vehicle
without positioning it correctly, you could damage
your vehicle. When raising your vehicle on a
jack, avoid contact with the rear axle control arms.
Do not raise the vehicle yet. Put the compact spare
tire near you.
5-84
2. Near each wheel,
there is a notch in
the vehicle's body.
Position the jack and
raise the jack head
until it fits firmly into
the notch in the
vehicle's frame
nearest the flat tire.
{
CAUTION:
Getting under a vehicle when it is jacked up is
dangerous. If the vehicle slips off the jack you
could be badly injured or killed. Never get under
a vehicle when it is supported only by a jack.
{
CAUTION:
Raising your vehicle with the jack improperly
positioned can damage the vehicle and even
make the vehicle fall. To help avoid personal
injury and vehicle damage, be sure to fit the
jack lift head into the proper location before
raising the vehicle.